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What is Casein Protein?

Casein protein makes up about 80% of the protein found in milk. It is a complete protein that comes in several forms that

Casein Protein

are usually derived from skim milk. Due to the clotting nature of casein (it forms a gel in your stomach), its digestion is slow and steady. Casein can steadily deliver amino acids to muscles over a seven-hour time period. “Having such a steady supply of amino acids has been shown in scientific studies to prevent muscle protein breakdown, which some scientists suggest is just as important for muscle growth as enhancing muscle protein synthesis,” says Tabatha Elliott, PhD, research scientist and nutrition expert.

Just In Case Casein proteins are listed as one of the following:

Caseinate (calcium caseinate, sodium caseinate or potassium caseinate) is the most soluble form of casein, which allows it to mix very easily. If you happen to be limiting your sodium intake, you may want to consider avoiding products with high amounts of sodium caseinate.

Micellar casein (MC) is made by using microfiltration to separate the casein portion of milk from the lactose, fat and whey. MC digests much more slowly than the other casein proteins, which is its greatest strength. “The protein drink you take before bed should contain a good deal of micellar casein to prevent muscle breakdown while you sleep,” recommends Stoppani.

Hydrolyzed casein protein (HCP), similar to whey-protein hydrolysate, is formed by the hydrolysis of casein protein. Unlike the other caseins, particularly micellar casein, HCP is rapidly digested at a similar rate to whey.